Are you getting messages that look like this in /var/log/messages?
nagios nagios: Error: Could not load module ‘/usr/lib/dnxServer.so’ -> /var/nagios/spool/checkresults/nebmodyMUyCP: undefined symbol: service_result_buffer
Make sure that you have configured things properly if you’re using Nagios 3.x+:
And more importantly:
Then edit your main nagios configuration to include the dnxServer.so as an event broker, and turn on event brokering.
You should hopefully get:
nagios: Event broker module ‘/usr/lib/dnxServer.so’ initialized successfully.